http://llvm.org/bugs/show_bug.cgi?id=22418
Bug ID: 22418
Summary: Some of the neon-scalar-copy.ll DUP tests have
regressed at some point, to mov+fmov.
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Backend: AArch64
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
For some of the tests in neon-scalar-copy.ll, the CHECK lines were
inadvertently removed, and seem to have regressed at some point. Consider:
define <1 x i8> @test_vector_dup_bv16B(<16 x i8> %v1) {
%shuffle.i = shufflevector <16 x i8> %v1, <16 x i8> undef, <1 x i32> <i32 14>
ret <1 x i8> %shuffle.i
}
which used to check for:
dup {{b[0-9]+}}, {{v[0-9]+}}.b[14]
This now generates:
umov w8, v0.b[14]
fmov s0, w8
ret
Which looks worse to me.
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